低频段大气噪声及处理技术

大气噪声是低频段通信系统的主要噪声来源.本文介绍了大气噪声的产生和传播原理,结合实测数据研究了噪声的脉冲特性及规律等.论证了非线性处理方法提高通信信噪比的原理,并通过削波仿真实验提高含实测噪声信号的信噪比.该方法在实际通信系统中易于实现,能够改善系统性能.

Atmospheric-noise at low frequency and its processing technique

Atmospheric-noise is the main noise of low frequency communication system.In this paper,we introduced its generation and propagation principle,and analysed its spikey characteristics with recorded data.We discussed a noise processing approach using nonlinearity processing,it confirms that nonlinearity can achieve an improvement in signal-to-noise ratio.Moreover,this approach can flexibly implement in a real communication system,and efficiently improve the performance of system.